just curious, as ive never seen them on a micra in the UK before..custom made by myself..even have a small lip for arydynamics cost be nothing to make!!! they cost around £100 from tuners like apr and what not.
some jap race cars use them, and do track cars....there to improve downforce over the front end of the car (better grip when the air pushed the canards down thus pushing the car to the ground) they also look cool.